I am unable to find any control in row editing event of gridview that i have put in edit template. I have to populate the dropdown control so that in editing the user can select value from the control.
How ever i can access the controls in row updating .But i need it in row editing event.
Here is the code.
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i am developing an application using ASP.NET with C#.net. in my application i have a gridview contains 3 fields.
1.description
2.unitprice
3.Regions
these three are template fields and last field i.e Regions is set to visible false.
code is
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when the grid is binded,i am not displaying the regions field as that is set to visible false.
when i click the edit button i.e in RowEditing event of grid i have to show the Region field.
for that i had wrriten the code as
gvoptProgramdetails.Columns[2].Visible = true;
when i run the application and when i click a perticular row of edit The region field is set to visible to all rows which are there in gridview.
my requirement is i have to show the region of perticular row in gridview which i have selected.
I am using radiobuttonlist and textbox in the gridview. I need to do operations on radiobuttonlist so that it should reflect on textbox . this is to be done after gridview_rowediting event fires i.e when we can see "update" and "cancel" buttons. I tried like this,
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here default selected value is "0" given in source.
My problem here is when I am changing the selecteditem, the corresponding action is not done.
I have tried so many ways to code
1 :- string DepttManager = ((DropDownList)GridViewDepartment.Rows[e.RowIndex].FindControl("ddlDepartmentManager")).SelectedValue;
and
GridViewRow gRow = (GridViewRow)sender;
GridView grid = (GridView)gRow.NamingContainer;
grid.SelectedIndex = gRow.RowIndex;
gRow.FindControl("ddlDepartmentManager");
grid.SelectedIndex = -1;
I've got a gridview that returns student order history which works just fine. It pulls the StudentId from a hidden field on page load. I have a link button that ADDS AN ORDER when clicked. It calls a stored procedure, inserts the record, then rebinds the gridview and displays the new record at the top of the list.
Problem is when I go to EDIT it, i get this error... "The GridView 'GridViewOrderHistory' fired event RowEditing which wasn't handled." But the interesting thing is the error doesn't occur if I close the browser and reload the page and then click on that new record that was created. Obviously I'm missing something in my code when the new order is created. Here are the 2 subs involved in the process.
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I am populating the gridview on the basis of listbox selection . However, I am setting the datasource in the click event after listbox entry. When i am trying to update any record in the gridview this error gets thrown because the datasourceid from the aspx page has been removed. Code for reference -
protected void btn_save_Click(object sender, EventArgs e)
{
ArrayList list = new ArrayList();
foreach (object o in ListBox2.Items)
{
list.Add(o);
}
string str2 = null, str, host;
string str1 = "SELECT SYSTEMNAME, DATETIME, PDOWNTIME, UDOWNTIME, SYSDOWNMINS, REASON FROM PLANNED_DOWNTIME where ";
host = Convert.ToString(list[0]);
str2 = " ( SYSTEMNAME like '" + host + "'";
for (int i = 1; i < list.Count; i++)
{
host = Convert.ToString(list[i]);
str2 = str2 + " or SYSTEMNAME LIKE'" + host + "'";
}
str = str1 + str2 + " )";
string connectstring = "Data Source=SRCPA035\ovops;Initial Catalog=reporter;Persist Security Info=True;User ID=sa;Password=ril123";
DataTable dt = new DataTable();
SqlConnection connection = new SqlConnection(connectstring);
try
{
connection.Open();
SqlCommand sqlCmd = new SqlCommand(str, connection);
SqlDataAdapter sqlDa = new SqlDataAdapter(sqlCmd);
sqlDa.Fill(dt);
if (dt.Rows.Count > 0)
{
GridView1.DataSource = dt;
GridView1.DataBind();
}
GridView1.DataSource = SqlDataSource1;
}
catch (System.Data.SqlClient.SqlException ex)
{
string msg = "Fetch Error:";
msg += ex.Message;
throw new Exception(msg);
}
finally
{
connection.Close();
}
}
Basically, I have a gridview and it has RowEditing function, which to be fair has two lines of code
GridView1.EditIndex = e.NewEditIndex;
GridView1.DataBind();
When I press the edit button from one of the row in gridview, it hides the whole gridview!
To bring it back, I have to call the function which does the binding and suprisingly, it loads back in edit mode!
i have a gridview with columns as datetime name status
i need to update the column record , so i used:
<asp:CommandField ShowEditButton="true" ButtonType="Link" EditText="Edit" ShowHeader="true" HeaderText="Edit" HeaderStyle-Font-Bold="true" Visible="true"> <HeaderStyle Font-Bold="True" />
</asp:CommandField>
and in rowediting event:
protected void GrdDynamicControls_RowEditing(object sender, GridViewEditEventArgs e)
{
GrdDynamicControls.EditIndex = e.NewEditIndex;
}
if i hit edit command by default it is showing me oly textbox, but i need datepicker and checkbox to be displayed in edit mode. how to bring that.
I have a Gridview which contains templated column that has 5 checkboxes in it. When you click on one checkbox, I want to uncheck the other 4.
I am using the Item Template for this. I don't want the user to have to Select a row, before clicking on the checkboxes. Here is my non-working code to uncheck the other checkboxes. I realize it's not "SelectedRow" that I want since there's no selected row, so how do I find the row containing the checkbox that fired off CheckChanged?
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i want save the gridview in buttonsave event..
here i wrote the code like this
for (int i=0;i<gridview1.row.count;i++)
{
label lbl=(label)gridview1.rows[i].findcontrol("lbl");
Textbox txtname=(Textbox)gridview1.rows[i].findcontrol("txtname");
}
here i got the textbox value but am not getting label value how to get that label value..
I have gridview in my page that users can edit their data in gridview below is code:
<asp:GridView ID="GridView1" runat="server" CssClass="DGridView1"
AutoGenerateColumns = "false" Font-Names = "Tahoma"
Font-Size = "9pt"
HeaderStyle-BackColor = "#e0e0e0"
OnPageIndexChanging = "OnPaging" onrowediting="EditCustomer"
onrowupdating="UpdateCustomer" onrowcancelingedit="CancelEdit"
GridLines = "Both" OnRowDataBound = "OnRowDataBound" >
I define Lable in gridview that I want when users click on edit it show s some text in this lable so I wrote editcustomer metod like below:
protected void EditCustomer(object sender, GridViewEditEventArgs e) {
Label3.Text = "neda";
GridView1.EditIndex = e.NewEditIndex;
BindData();
BindData1();
}
But this error happen:
the name "lable3" doesn't exist in current context
I know because I define it in gridview it can't recognize but how I can solve it?
Im not able to find control in datalist.
Protected
Sub DataList1_ItemDataBound(ByVal sender
As Object,
ByVal e As System.Web.UI.WebControls.DataListItemEventArgs)
Handles DataList1.ItemDataBound
lblshippingoutside.Visible =
Dim lblshippingoutside
As Label = CType(e.Item.FindControl("lblshippingoutside"), Label)False
End Sub
Throws an exception .
Object reference not set to an instance of an object.
i have datalist and on button click event i check the checkbox is checked or notfor this my code is
<asp:DataList runat="server" ID="dlstproductsize">
<ItemTemplate>
<input type="checkbox" value="<%#eval("size_id")%>" id="chksize" runat="server" /> <%#Eval("name")%>
</ItemTemplate>
</asp:DataList>
If chkallowsize.Checked = True Then
For Each item In dlstproductsize.Items
If (CType(item.FindControl("chksize"), HtmlInputCheckBox)).Checked = True Then
ocommon.ProductMapingInsert(uniq_id.Text, CType(item.FindControl("chksize"), HtmlInputCheckBox).Value)
End If
Next
End If
i get the error like object reference not set to the object
I'm trying to figure out why my gridview disappears when I trigger the rowediting event.
The Gridview:
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The code-behind:
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When I click on the edit linkbutton, the gridview disappears. What is going wrong?
Want to get the value of lblStatus and assign to string variable strRevStatus.
This is how i used to do with datagrid, i am having problem with gridview.
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In the last cell of my gridview I have 2 separate linkbuttons. I want to further process them using Gridview Onrowcommand event but How would I know which particular link has actually raised the event.
View 3 RepliesI add one or more textbox controls to a repeater itemtemplate during OnItemDataBound.
The textbox controls are instantiated and then added to a placeholder.
My problem is getting the user entered values from those dynamically added textboxes. They do not seem to exist in the repeater items collection.
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I want to find out the rowstate of a gridview in RowDeleting event. Also I want to disable my delete linkbutton in the gridview when in edit mode.
View 10 RepliesI have GridView control and assosiated DetailView control.
When the record form GridView is seleted, I am showing the details on DetailView.
I have set the Auto generated delete button to true. And now I want to delete the record when someone clicks the Delete button from DetailView control.
Following is the HTML markup for my details view
<asp:DetailsView id="detailsPayments" runat="server" GridLines="Vertical" ForeColor="Black" CellPadding="4"
DataKeyNames="Id" Width="125px" Height="50px" HeaderText="Payment Details"
AutoGenerateRows="False" BorderStyle="None" BackColor="White" BorderColor="#DEDFDE" BorderWidth="1px"
AutoGenerateDeleteButton="True" OnItemDeleting="DeleteItem">
<FooterStyle BackColor="#CCCC99"></FooterStyle>
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But not able to sucessful. Getting runtime exception as follows
Stack Trace:
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I am trying to update the row using gridview_rowupdating event but I am unable to update. I tried the code like this...
foreach (GridViewRow i in GridView1.Rows)
{
TextBox sname = i.FindControl("sname") as TextBox;
TextBox fname = i.FindControl("fname") as TextBox;
TextBox sex = i.FindControl("txtsex") as TextBox;
// Label lblpin1 = i.FindControl("lblpin") as Label;
TextBox tpin = i.FindControl("txtpin") as TextBox;
tpin.Enabled = true;
// lblpin1.Enabled = true;
string pinno;
pinno = Convert.ToString(tpin.Text.Trim());
conn2.Open();
SqlCommand cmd = new SqlCommand("update NRDetails2010 set SNAME='" + sname + "',FNAME='" + fname + "',SEX='" + sex + "' where pin='" + pinno.Trim() + "' and InstCode='" + Session["UId"] + "' and Sem='" + ddlsem.SelectedItem.Text + "' and scheme='"
+ ddlscheme.SelectedItem.Text.Trim() + "' ", conn2);
cmd.ExecuteNonQuery();
conn2.Close();
}
I am getting error at cmd.ExecuteNonQuery()
Here I am giving connection globally and opening in this event. In gridview, I am updating 3 fields depending on 4 conditions.
I'm unable find check box control in my webpage.
When building the page I'm getting "checkbox null" and "false".
I'm pasting the code here.
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I have a panel which has a repeater within it. Within the repeater I have a few controls. One of those controls is a Drop Down list which has an OnSelectedIndexChanged event. I can get this to fire without issue but I cannot find my DropDownList control within that repeater within the SelectedIndexChanged event . The repeater has an OnItemDataBound event and I can use the RepeaterItemEventArgs to find the control using e.Item.FindControl("ControlName") without issue but when that event occurs is NOT when I need to find the DropDownList.
What I want to do is have another control's Visible property be set to "true" when the value of the DropDownList meets a certain value. As far as I know I can only do this during the SelectedIndexChanged event and I can't change the signature of the event by trying to use RepeaterItemEventArgs.
I am trying to add dynamically gridview (headerstylewidth, back-color, height, etc…, itemstyle width, back-color, height, etc…), in codebehind but I am receiving this error:
Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index
See the code:
<asp:GridView
runat ="server"
ID="gridview1"
Height="175px"
Width="750px"
GridLines="Both"
onRowDatabound="gvdata_onRowdataBound">
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i have a gridview control i added checkbox contrl dynamically but i am not getiing the reference of checkbox in button clilck event here is my code Gridvew
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.vb code
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i have a gridview and i have made table in gridview and in table i have bound some controlsbut i am unable to find control. if i am not using table in gridview then i am not facing the problem but when i am using table in gridview then i am facing this problem please send me a solution of this problem.
View 4 Replies